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Toxicological Profile for Pyridine. Atlanta (GA): Agency for Toxic Substances and Disease Registry (US); 1992 Sep.
Toxicological Profile for Pyridine.
Show detailsTABLE 3-2Physical and Chemical Properties of Pyridine
| Property | Information | Reference |
|---|---|---|
| Molecular weight | 79.10 | Weast 1985 |
| Color | Slightly yellow to colorless | Sax and Lewis 1987 |
| Physical state | Liquid | Sax and Lewis 1987 |
| Melting point | −42°C | Weast 1985 |
| Boiling point | 115.5°C | Weast 1985 |
| Density at 20°C | 0.9819 | Weast 1985 |
| Odor | Nauseating | Sax and Lewis 1987 |
| Odor threshold: | ||
| Water | 0.95 mg/L | Amoore and Hautala 1983 |
| Air | 0.17 ppm | Amoore and Hautala 1983 |
| Solubility: | ||
| Water at 20°C | Very soluble | Sax and Lewis 1987 |
| Organic solvents | Soluble in alcohol, ether, benzene | Sax and Lewis 1987 |
| Partition coefficients: | ||
| Log Kow | 0.64/1.04 | Verschueren 1983 |
| Log Koc | 0.84 | Roy and Griffin 1985 |
| Vapor pressure at 13.2°C | 10 mmHg | Sax 1984 |
| at 20°C | 14 mmHg | Verschueren 1983 |
| at 25.5 °C | 20.6 mmHg | Chao et al. 1983 |
| at 30°C | 26 mmHg | Verschueren 1983 |
| Henry’s law constant: | 1.1×10−5 atm-m3-mole−1 (25°C) | Hawthorne et al. 1985 |
| Autoignition temperature | 900°F (482°C) | Sax and Lewis 1987 |
| Flashpoint | 68°F (20°C) (closed cup) | Sax and Lewis 1987 |
| Flammability limits | Lower 1.8, upper 12.4 | HSDB 1989 |
| Conversion factors | 1 mg/m3 = 0.30 ppm | Verschueren 1983 |
| 1 ppm = 3.29 mg/m3 | Verschueren 1983 | |
| Explosive limits | 1.8–12.4% | Sax and Lewis 1987 |
| pKa | 5.19 | Reinhardt and Brittelli 1981 |
- TABLE 3-2, Physical and Chemical Properties of Pyridine - Toxicological Profile ...TABLE 3-2, Physical and Chemical Properties of Pyridine - Toxicological Profile for Pyridine
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